Steam-ejector



(Model.)

L. SCHUTTE.

STEAM BJBGTOR.

No. 337,443. Patented Mar. 9, 1886.

Iliyrrnn STATES Partnr Ormea.

LOUIS SCHUTTE, OF PHILADELPHIA, PENNSYLVANIA.

STEAM-EJ ECTO R.

SPECIFICATION forming part of Letters Patent No. 337,443, dated March 9, 1886.

Application led December 10, 1885. Serial No. 185,235. (Model.)

.To @ZZ-whom t may concern.-

Be it known that I, Louis ScHUTrE, of

Philadelphia, inthe county of Philadelphiav and State of Pennsylvania, have invented certain Improvements in Steam-Ejectors, Src., of which the following is a specification.

This invention relates to that class of jet apparatus which comprises as the leading elements an actuating steam-nozzle, a combiningtube in which the actuating-duid and the fluid to be moved are brought in contact, and a dischargetube expanding in the direction of the delivery.

The object ot' the invention is more particularly to insure the production ofa strong suction, to lfacilitate the starting of the apparatus under all conditions, and to provide for adjusting and fixing the steam-admission.

To this end the first part of the invention consists, essentially, in the provision of apassage or chamber extending from the combining-tube at an intermediate point in its length to the delivery end of the apparatus; also, in combining with a passage such as described a check-valve or other equivalent valve, by which it may be closed; also, in combining with an adjustable steam-controlling spindle a cap to inclose and protect its outer end, and means for locking the same against rotation.

Referring to the accompanying drawings, Figure l represents a longitudinal vertical section through an ejector having my invention incorporated therein. Fig. 2 represents an elevation, partiallyin section, of a similar instrument provided with the spindle-adjusting devices, and with lateral instead of longitudinal inlet and outlet necks; Fig. 3, an end view with the cap removed.

Referring to the drawings, A represents a steam-admission nozzle located at one end of the instrument; B B', the combining tube having a conical or tapered bore arranged in position to receive the steam-jet at its larger end; C, the discharge-tube jointed to the smaller end of the combiningtube, and increasing in diameter toward the deliveryr side of the apparatus.

D represents the throat through which water is admitted to the annular opening between the mouth of the steam-nozzle and the combining-tube that it may enter the latter, and E represents the discharge-throat.

Instead of constructing the combining-tube in a continuous length, as usual, I divide it transversely at a suitable point between its two ends, thereby producing the throat or opening F, and from this throat I extend a passage or channel, G, to the delivery end of the instrument. At a suitable point this channel is provided with a valve, H, by which it may be closed. I propose to use either a check-valve opening toward the delivery side, as represented in Fig. l, or any equivalent form of valve-such, for example, as an ordinary valve having a screw-stem and a handwheel, by which to operate it from the exterior.

When steam is admitted through the nozzle A, it will discharge not only through the central bore of the apparatus,but also through the transverse opening F and the passage GrA to the discharge-tube, thereby creating under all conditions a suction through the feedthroat D, so that the water will promptly discharge through the center. When the checkvalve is used, it Will be automatically closed by the back-pressure as soon as the operation ofthe apparatus is inaugurated.

In the form of device shown in Fig. 1 the inlet and outlet openings are located at the ends of the body, their axes coinciding with that of the combining and discharge tubes.

The apparatus shown in Fig. 2 differs from the first in that the inlet and outlet throats or necks are applied to the side of the body instead of the ends. This arrangement is advantageous in that it permits me to employ at the ends of the body caps a and b, the removal of which will give access to the interior ofthe instrument without disturbing the pipe-connections. In this form lof device I propose to employ a conical spindle, I, extending centrally into the steam-nozzle for the purpose of regulating the steam-admission. This spindle has its body portion threaded and seated in a cap, b, its outer end being projected beyond the cap,and squared or otherwise adapted to receive a wrench, screw-driver, or equivalent adjusting device.

To prevent the accidental movement of the spindle, I make its outer end of angular form and apply thereover a washer, J ,which is also made of angular or irregular form, and seated in a corresponding cavity in the cap b, by

which it is prevented from rotating. A secondary cap, c, secured into the outer end of the cap b, serves the twofold purpose of coniining this washer in place and of protecting the outer end of the spindle, so that it may not be improperly adjusted.

lIlle essence of inyinvention consists in providing a passage from an intermediate point in the combining-tube to the delivery side of the apparatus, and it is to be understood that the parts maybe inodied in form and arrangement at will, provided this featureis retained.

I am aware that a divided combining-tube has been used to facilitate the starting,` of ejectors or boiler-feeders-as, for example, in Fig. 7 of Letters Patent granted to E. Korting, January 30, 1872, No. 123,261-, and assigned to myself; but the construction therein shown differs from the present in that there is no eX- ternal com in unieation between the opening` in the cornbiningtube and the discharge end of' the instrument.

Having thus described my invention7 what I claim is-l 1. In an ejector or Siphon-pump having a steam-nozzle, a con1bining-tube, and a discharge-tube, a passage forming a communication between the discharge end of the instrument and the combining-tube at a point between the end ot' the steam-nozzle and the smallest bore ofthe instrument.

2. In a Siphon-pump or ejector, the combination of the steam-nozzle, the mixing-tube provided with a lateral opening` at an intermediate point in its length, the discharge tube, and a channel, G, forming an external communication between the opening in the combining-tube and the delivery side of the apparatus, and a valve for closing said passage.

3. In an ejector or jet apparatus substantially such as herein described, the coinbination of the steam-nozzle, the combiningtube divided transversely, the disehargretube, the channel or passage G, surrounding the combiningtube and communicating with the delivery end of the apparatus, and the cheekvalve H.

4. In combination with the steam-nozzle and the threaded regulating-spindle of angular or equivalent form at the outer end, the locking-washer, applied substantially as shown.

5. The threaded squared spi ndle,the recessed cap b, having the spindle mounted therein, the locking-washer, and the supplemental cap e, covering` the end of the spindle and confining,` the washer, substantially as described.

In testimony whereof I hereunto set my hand, this 26th day of October, 1885, in the presence of two attesting,` witnesses.

LOUIS SGHUTTE.

TWitnesses:

DANIEL HILDRETH, FRANK SPILLIN. 

